Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate
2006-01-18
2010-02-16
Young, Wayne R (Department: 2627)
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
C369S053350
Reexamination Certificate
active
07663985
ABSTRACT:
The focus offset FE0corresponding to minimum jitter is learned in advance. When performing spherical aberration adjustment for each disk, the spherical aberration is adjusted so that the jitter reaches a minimum, while maintaining the focus offset at FE0. The invention provides a method for performing high-precision adjustment of the focus offset and spherical aberration, even in the case of a disk which does not have data recorded on it.
REFERENCES:
patent: 5627807 (1997-05-01), Abe
patent: 6278670 (2001-08-01), Hayashi et al.
patent: 7164638 (2007-01-01), Wada et al.
patent: 2001/0028614 (2001-10-01), Furukawa
patent: 2002/0176331 (2002-11-01), Ariyoshi et al.
patent: 2003/0099168 (2003-05-01), Ma et al.
patent: 2003/0107961 (2003-06-01), Yasuda et al.
patent: 2003/0147332 (2003-08-01), Ichimura et al.
patent: 2004/0017743 (2004-01-01), Sasaki et al.
patent: 2004/0218484 (2004-11-01), Kuze et al.
patent: 2005/0047291 (2005-03-01), Kuze et al.
patent: 2005/0052964 (2005-03-01), Fujita et al.
patent: 2005/0063259 (2005-03-01), Isshiki et al.
patent: 2005/0237873 (2005-10-01), Maruyama et al.
patent: 1575039 (2005-09-01), None
patent: 2000-011388 (2000-01-01), None
patent: 2001-222838 (2001-08-01), None
patent: 2003-168225 (2003-06-01), None
patent: 2003-233917 (2003-08-01), None
patent: 2004-95106 (2004-03-01), None
patent: 2004-171630 (2004-06-01), None
patent: 2004-241081 (2004-08-01), None
patent: 2004-241102 (2004-08-01), None
patent: 2005-85311 (2005-03-01), None
patent: 2005-100483 (2005-04-01), None
Jpn. J. Appl. Phys. vol. 38 (1999) pp. 1715-1719, Part 1, No. 3B Mar. 1999.
Kudo Hiromi
Kurokawa Takahiro
Miyamoto Harukazu
Alunkal Thomas D
Antonelli, Terry Stout & Kraus, LLP.
Hitachi , Ltd.
Hitachi-LG Data Storage, Inc.
Young Wayne R
LandOfFree
Information recording and reproduction method and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Information recording and reproduction method and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Information recording and reproduction method and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4204187